[LeetCode] 238. Product of Array Except Self

坑真的很多，首先要处理全零reduce没有值typeerror的问题。

class Solution:def productExceptSelf(self, nums: List[int]) -> List[int]:total=reduce(mul, nums)ret =[]if total == 0:try:total = reduce(mul, [x for x in nums if x != 0]) except TypeError:#default value for all element is 0total = 0ret = [total if x==0 else 0 for x in nums]else:ret = [total// x for x in nums]return ret

然后发现如果零大于1个，必然返回全零list，改造一下。

class Solution:def productExceptSelf(self, nums: List[int]) -> List[int]:# 0>1 return 0if nums.count(0) > 1:return [0 for x in nums]#elsetotal=reduce(mul, nums)ret =[]if total == 0:total = reduce(mul, [x for x in nums if x != 0])ret = [total if x==0 else 0 for x in nums]else:ret = [total// x for x in nums]return ret

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错了两次，不过结果还不错